@article{PAR00002900,
  title = {{C}onsequences of slotting on the pore characteristics of a sandy soil in northeast {T}hailand},
  author = {{H}artmann, {C}hristian and {L}esturgez, {G}r{\'e}gory and {R}atana-{A}nupap, {S}. and {H}allaire, {V}. and {B}ruand, {A}ry and {P}oss, {R}oland},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the sandy soils of northeast {T}hailand, root development is generally limited to the topsoil (0-20 cm depth) but a simple slotting intervention (20-40 cm) significantly increased the root frequency in the slotted material ({E}slot) compared with the undisturbed subsoil ({E} horizon). {T}he aim of this study was to investigate the consequences of slotting on the soil structure by analysing at different scales the pore characteristics of the original soil profile and of the soil material inside the slot. {T}hese characteristics were studied using bulk density measurements, image analysis of thin sections and mercury porosimetry. {O}ur results showed that the total porosity of the {E} horizon and {E}slot material was similar when measured in 100 cm3 cylinders, but that the pore size distribution had been changed by slotting. {T}he unaltered {E} horizon contained mainly small pores characterized by a narrow distribution related to close packing of the sand grains, associated with some biological macropores probably with poor continuity as they did not contain roots despite their size. {O}n average, pores were larger in the {E}slot material, with a broader distribution resulting from looser packing of the sand grains but with fewer biological macropores. {A}lthough slotting reduced the number of biological pores, the looser packing appeared to be more favourable to root development than the presence of macropores in the {E} horizon. {F}inally, the comparison of the porosity in the different horizons with the porosity of the {E}slot material, indicated the significance of the closeness of the sand packing on root development.},
  keywords = {{S}andy loam ; compaction ; soil slotting ; bulk density ; image analysis ; mercury porosimetry ; {THAILANDE}},
  booktitle = {},
  journal = {{S}oil {U}se and {M}anagement},
  volume = {24},
  numero = {},
  pages = {100--107},
  year = {2008},
  DOI = {10.1111/j.1475-2743.2007.00138.x},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002900},
}